Beam asymmetry Sigma measurements on the π^- photoproduction off neutrons

G. Mandaglio , F. Mammoliti , M. Manganaro , V. Bellini , J. P. Bocquet , L. Casano , A. D'Angelo , R. Di Salvo

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A. Fantini D. Franco G. Gervino F. Ghio G. Giardina B. Girolami A. Giusa A. Ignatov A. Lapik P. Levi Sandri A. Lleres D. Moricciani A. N. Mushkarenkov V. Nedorezov C. Randieri D. Rebreyend N. V. Rudnev G. Russo C. Schaerf M. L. Sperduto M. C. Sutera A. Turinge V. Vegna (The GRAAL collaboration) W. J. Briscoe I. I. Strakovsky

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keywords asymmetrybeamneutronsphotoproductionsigmaanalysesangularcompared

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The $\Sigma$ beam asymmetry in the photoproduction of negative pions from quasi-free neutrons in a deuterium target was measured at Graal in the energy interval 700 - 1500 MeV and a wide angular range, using polarized and tagged photons. The results are compared with recent partial wave analyses.

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Beam asymmetry Sigma measurements on the π^- photoproduction off neutrons

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